基于GIS的深空探测器真空热环境模拟测试系统设计

Design of GIS-based vacuum thermal environment simulation test system for deep space detectors

摘要:

以提升真空热环境模拟系统的环境监测和数据异常检测能力为目的，设计基于GIS的深空探测器真空热环境模拟测试系统。硬件部分利用GIS技术监测真空环境中的相关属性、空间及缺陷等数据，根据监测信息展开可视化统计分析，分别设计真空抽气系统、环境监测系统及外热流模拟系统，并通过预警反馈机制操纵数据属性，软件部分利用自适应PID控制算法高精度的控制红外加热笼的温度变化，并结合真空容器、真空抽气系统、外热流模拟系统完成深空探测器真空热环境模拟测试系统设计。实验结果表明，该测试系统极限真空度值为3.3×10-5Pa，各支管液氮流量流速范围为0.26～0.40m/s，具备良好的流动分布均匀性，高温和低温时加热区辐照热流密度分别为586W/m2和27W/m2，环境缺陷数据检测精准率高达98.73%，各项指标均满足设计要求。

Abstract:

For the purpose of improving the environmental monitoring and data anomaly detection capabilities of the vacuum thermal environment simulation system, a GIS-based deep space detector vacuum thermal environment simulation test system is designed. The hardware part uses GIS technology to monitor the relevant attributes, spaces and defects in the vacuum environment, develops visual statistical analysis based on the monitoring information, designs the vacuum pumping system, environmental monitoring system and external heat flow simulation system respectively, and manipulates the data through the early warning feedback mechanism Attributes, the software part uses the adaptive PID control algorithm to control the temperature change of the infrared heating cage with high precision, and combines the vacuum container, vacuum pumping system, and external heat flow simulation system to complete the design of the vacuum thermal environment simulation test system for the deep space detector. The experimental results show that the ultimate vacuum of the test system is 3.3×10-5Pa, and the liquid nitrogen flow rate range of each branch pipe is 0.26～0.40m/s. It has good flow distribution uniformity, and the heating zone is irradiated by heat flow at high and low temperatures. The densities are 586W/m2 and 27W/m2 respectively, the detection accuracy rate of environmental defect data is as high as 98.73%, and all indicators meet the design requirements.